Dagger 2 / DialogFragment / appcompat-v7:22.2.0 causes "cannot access DialogStyle"

[jeffdcamp]

I don't know if this is an issue with Dagger 2.0 or Android AppCompat....

We are using android.support.v4.app.DialogFragment and Dagger 2. When switching from appcompat-v7:22.1.0 to appcompat-v7:22.2.0 Dagger annotation processor causes the following error:

===== Gradle log =====
:processDebugJavaRes UP-TO-DATE
:compileDebugJavaWithJavac
error: cannot access DialogStyle
class file for android.support.v4.app.DialogFragment$DialogStyle not found
Consult the following stack trace for details.
com.sun.tools.javac.code.Symbol$CompletionFailure: class file for android.support.v4.app.DialogFragment$DialogStyle not found
1 error
:compileDebugJavaWithJavac FAILED

Very Simple Sample Code which causes the error:

===== TestFragment.java =====
import android.support.v4.app.DialogFragment;
import org.company.project.Prefs;
import javax.inject.Inject;

public class TestFragment extends DialogFragment {
@Inject
Prefs prefs;
}

===== AppComponent.java =====
import org.company.project.ui.TestFragment;
import javax.inject.Singleton;
import dagger.Component;

@singleton
@component(modules = AppModule.class)
public interface AppComponent {
void inject(TestFragment target);
}

[marcoRS]

I'm seeing this issue as well :-\

[hansenji]

I am getting the same results with my dialogs.

[jeffdcamp]

It seems that this might be a AppCompat issue... there seems to be similar discussions about this same issue with other annotation processing libraries:

androidannotations/androidannotations#1435

and

https://code.google.com/p/android/issues/detail?id=175086

[jeffdcamp]

I just found a TEMPORARY workaround... till appcompat fixes this issue:

1. Create the following package in your project src/main/java

android.support.v4.app

1. Create the following new file:

DialogFragment$DialogStyle.java

1. Contents
   package android.support.v4.app;

// todo remove this file when fixed in appcompat (https://code.google.com/p/android/issues/detail?id=175086)
public @interface DialogFragment$DialogStyle {
}

[marcoRS]

@jeffdcamp You're proposed solution doesn't seem to work for me I now get the following error:

An exception has occurred in the compiler (1.8.0_40). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.lang.NullPointerException
at com.sun.tools.javac.code.Types.eraseNotNeeded(Types.java:2178)
at com.sun.tools.javac.code.Types.erasure(Types.java:2171)
at com.sun.tools.javac.comp.TransTypes.erasure(TransTypes.java:867)
at com.sun.tools.javac.comp.TransTypes.translateClass(TransTypes.java:1018)
at com.sun.tools.javac.comp.TransTypes.visitClassDef(TransTypes.java:511)
at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:693)
at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
at com.sun.tools.javac.comp.TransTypes.translate(TransTypes.java:490)
at com.sun.tools.javac.comp.TransTypes.translateTopLevelClass(TransTypes.java:1035)
at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1486)
at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1356)
at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
at com.sun.tools.javac.main.Main.compile(Main.java:523)

[jeffdcamp]

@marcoRS Interesting.... I have applied this work-around to 4 different projects and verified that these projects compile correctly on several machines... I compile with java 8 on one machine and java 7 on another machine....

[maxlordks]

Same issue with @jeffdcamp Is updating jre etc helpful?

[RobertoArtiles]

Getting the same error as @marcoRS

[malroy89]

+1. Got the same error as @marcoRS

[AlexanderThiele]

same error as @marcoRS

[jeffdcamp]

@marcoRS, @RobertoArtiles, @malroy89 , @AlexanderThiele I found another work-around.... a bit more ugly... but has gotten us around this issue (including the NPE on the above work-around) till appcompat 22.2 is fixed.

• Create the following package in your project src/main/java

android.support.v4.app

• Copy the Google v4 FragmentDialog.java code

https://android.googlesource.com/platform/frameworks/support/+/refs/heads/master/v4/java/android/support/v4/app/DialogFragment.java

• Rename the class (to something like TempFragmentDialog). You will get a "Duplicate" class error if you don't rename the class.
• Any FragmentDialog, in your project, that has @Inject will need to extend your copy of the FragmentDialog (example: public class MyFragmentDialog extends TempFragmentDialog)

[marcoRS]

@jeffdcamp Thanks for the workaround. I however had to change every class that extended from DialogFragment, not just the classes that used @Inject

[floating-cat]

It was fixed on Android Support 22.2.1.

[jeffdcamp]

Fixed